1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index ef891e5..e9f315c 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -1997,6 +1997,18 @@ remove_useless_stmts_1 (gimple_stmt_iterator *gsi, struct rus_data *data)
           }
           break;
 
+        case GIMPLE_CHANGE_DYNAMIC_TYPE:
+	  /* If we do not optimize remove GIMPLE_CHANGE_DYNAMIC_TYPE as
+	     expansion is confused about them and we only remove them
+	     during alias computation otherwise.  */
+	  if (!optimize)
+	    {
+	      data->last_was_goto = false;
+	      gsi_remove (gsi, false);
+	      break;
+	    }
+	  /* Fallthru.  */
+
         default:
           data->last_was_goto = false;
           gsi_next (gsi);